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<title>mod_dav_lock － Apache 2.2 中文手册 [金步国]</title>
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<div id="page-content"><div id="preamble"><h1>Apache模块 mod_dav_lock</h1>

<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="module">
<tr><th><a href="module-dict.html#Description">说明</a></th><td>为<code class="module"><a href="mod_dav.html">mod_dav</a></code>锁定服务器上的文件提供支持</td></tr>
<tr><th><a href="module-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">模块名</a></th><td>dav_lock_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">源文件</a></th><td>mod_dav_lock.c</td></tr>
<tr><th><a href="module-dict.html#Compatibility">兼容性</a></th><td>仅在 Apache 2.1 及以后的版本中可用</td></tr>
</table>
<h3>概述</h3>

    <p>This module implements a generic locking API which can be used by any
    backend provider of <code class="module"><a href="mod_dav.html">mod_dav</a></code>. It <em>requires</em> at least
    the service of <code class="module"><a href="mod_dav.html">mod_dav</a></code>. But without a backend provider
    which makes use of it, it's useless and should not be loaded into the
    server. A sample backend module which actually utilizes
    <code class="module"><a href="mod_dav_lock.html">mod_dav_lock</a></code>, is <a href="http://subversion.tigris.org/">mod_dav_svn</a>, the subversion provider module.</p>

    <p>Note that <code class="module"><a href="mod_dav_fs.html">mod_dav_fs</a></code> does <em>not</em> need this
    generic locking module, because it uses it's own more specialized
    version.</p>

    <p>In order to make <code class="module"><a href="mod_dav_lock.html">mod_dav_lock</a></code> functional, you just have
    to specify the location of the lock database using the <code class="directive"><a href="mod_dav_lock.html#davgenericlockdb">DavGenericLockDB</a></code> directive described
    below.</p>

    <div class="note"><h3>Developer's Note</h3>
      <p>In order to retrieve the pointer to the locking provider function, you
      have to use the <code>ap_lookup_provider</code> API with the arguments
      <code>dav-lock</code>, <code>generic</code>和<code>0</code>.</p>
    </div>
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<div class="directive-section"><h2><a name="DavGenericLockDB" id="DavGenericLockDB">DavGenericLockDB</a> <a name="davgenericlockdb" id="davgenericlockdb">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>Location of the DAV lock database</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>DavGenericLockDB <var>file-path</var></code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>server config, virtual host, directory</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_dav_lock</td></tr>
</table>
    <p>Use the <code class="directive">DavGenericLockDB</code> directive to specify
    the full path to the lock database, excluding an extension. If
    the path is not absolute, it will be taken relative to <code class="directive"><a href="core.html#serverroot">ServerRoot</a></code>. The implementation of
    <code class="module"><a href="mod_dav_lock.html">mod_dav_lock</a></code> uses a SDBM database to track user
    locks.</p>

    <div class="example"><h3>示例</h3><p><code>
      DavGenericLockDB var/DavLock
    </code></p></div>

    <p>The directory containing the lock database file must be
    writable by the <code class="directive"><a href="mpm_common.html#user">User</a></code>和<code class="directive"><a href="mpm_common.html#group">Group</a></code> under which
    Apache is running.  For security reasons, you should create a
    directory for this purpose rather than changing the permissions on
    an existing directory.  In the above example, Apache will create
    files in the <code>var/</code> directory under the <code class="directive"><a href="core.html#serverroot">ServerRoot</a></code> with the base filename
    <code>DavLock</code> and extension name chosen by the server.</p>


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